Proof Research Carbon Fiber Barrel Blank .224 Cal 22" 1:8 Twist 4 Groove Sendero

Proof Research Carbon Fiber Barrel Blank .224 Cal 22" 1:8 Twist 4 Groove Sendero

The Proof Research Carbon Fiber Barrel Blank is a match-grade bolt-action barrel blank chambered in .224 caliber, built in a 22-inch length with a 1:8 twist rate optimized for stabilizing a wide range of modern .22-caliber projectiles. This configuration features 4-groove rifling for consistent bullet engagement and reduced fouling, along with a Sendero contour that balances stiffness and weight for precision rifle builds. Barrel blanks are supplied unchambered and unthreaded, allowing full customization for gunsmithing applications.

Constructed with a 416R stainless steel core wrapped in aerospace-grade carbon fiber, this barrel delivers significant weight reduction—up to ~64% lighter than comparable steel barrels—while maintaining rigidity and thermal stability under sustained fire. The carbon fiber matrix improves heat dissipation and minimizes point-of-impact shift during extended shot strings. Designed for custom bolt-action builds, this Sendero contour blank is ideal for precision shooting, varmint rifles, and lightweight long-range platforms requiring strength, consistency, and reduced front-end weight.

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